SiC synthesis using natural Mg-silicates

Autor: Devečerski A., Pošarac M., Dimitrijević M., Rosić M., Volkov-Husović T., Branković G.
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Science of Sintering, Vol 44, Iss 1, Pp 81-94 (2012)
Druh dokumentu: article
ISSN: 0350-820X
DOI: 10.2298/SOS1201081D
Popis: The silicon carbide powders are prepared by carbothermal reduction of domestic mineral resources (white and brown sepiolite), at relatively low temperatures (1200 - 1600oC). Carbothermal reduction process is greatly influenced by chemical composition of sepiolites and type of carbon used. Obtained SiC powders consist of fine β-SiC particles and did not retain the fibrous morphology of sepiolites. Catalytical influence of Fe is attributed to formation of iron-silicide and its potentionaly important role in removal of Mg-species, i.e. reduction of Mg2SiO4 and MgO into Mg(g).
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